Vintage 486 VLB Socket 3 Baby AT Motherboard - SiS 85C471 Chipset
Classic 486-class motherboard featuring 32-bit VESA Local Bus (VLB) architecture and the high-performance SiS 85C471 chipset. Features hybrid memory support with both 30-pin and 72-pin SIMM sockets and 256KB of onboard L2 cache, ideal for period-correct MS-DOS and Windows 3.11 / 95 retro builds.
Key Specifications:- Platform / Architecture: 486 VLB (VESA Local Bus) / ISA- Chipset: SiS 85C471 System Controller + SiS 85C407 Data Buffer Controller- CPU Socket: Socket 3 (ZIF socket with locking lever)- Supported Processors: Intel / AMD / Cyrix / TI 486SX, 486DX, 486DX2, 486DX4, 5x86, and Intel Pentium OverDrive (P24T)- CPU Voltage Support: 5V and 3.3V selectable via onboard jumpers- L2 Cache: 256KB Write-Back Cache installed (8x 32Kx8 SRAM chips + Winbond TAG RAM in sockets)- Memory Sockets: * 4x 30-pin SIMM sockets * 2x 72-pin SIMM sockets- Expansion Slots: * 3x 32-bit VLB (VESA Local Bus) slots * 4x 16-bit ISA slots (7 ISA slots total, 3 shared with VLB)- BIOS: Award Software 486 BIOS in socket- Power Management: Integrated Lance LT38C41 Green PC controller- Keyboard Port: Standard 5-pin DIN (AT style)- Power Connector: Standard 12-pin AT power connector (P8/P9)- Form Factor: Baby AT (approx. 8.7" x 9.8" / 22 cm x 25 cm)
untested / Condition and package contents are as shown in the photos.
